<?php

    /**
     * PHPExcel_Worksheet_Drawing_Shadow
     * Copyright (c) 2006 - 2015 PHPExcel
     * This library is free software; you can redistribute it and/or
     * modify it under the terms of the GNU Lesser General Public
     * License as published by the Free Software Foundation; either
     * version 2.1 of the License, or (at your option) any later version.
     * This library is distributed in the hope that it will be useful,
     * but WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     * Lesser General Public License for more details.
     * You should have received a copy of the GNU Lesser General Public
     * License along with this library; if not, write to the Free Software
     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
     * @category   PHPExcel
     * @package    PHPExcel_Worksheet_Drawing
     * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
     * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
     * @version    ##VERSION##, ##DATE##
     */
    class PHPExcel_Worksheet_Drawing_Shadow implements PHPExcel_IComparable {
        /* Shadow alignment */
        const SHADOW_BOTTOM       = 'b';
        const SHADOW_BOTTOM_LEFT  = 'bl';
        const SHADOW_BOTTOM_RIGHT = 'br';
        const SHADOW_CENTER       = 'ctr';
        const SHADOW_LEFT         = 'l';
        const SHADOW_TOP          = 't';
        const SHADOW_TOP_LEFT     = 'tl';
        const SHADOW_TOP_RIGHT    = 'tr';
        /**
         * Visible
         * @var boolean
         */
        private $visible;
        /**
         * Blur radius
         * Defaults to 6
         * @var int
         */
        private $blurRadius;
        /**
         * Shadow distance
         * Defaults to 2
         * @var int
         */
        private $distance;
        /**
         * Shadow direction (in degrees)
         * @var int
         */
        private $direction;
        /**
         * Shadow alignment
         * @var int
         */
        private $alignment;
        /**
         * Color
         * @var PHPExcel_Style_Color
         */
        private $color;
        /**
         * Alpha
         * @var int
         */
        private $alpha;

        /**
         * Create a new PHPExcel_Worksheet_Drawing_Shadow
         */
        public function __construct() {
            // Initialise values
            $this->visible    = false;
            $this->blurRadius = 6;
            $this->distance   = 2;
            $this->direction  = 0;
            $this->alignment  = PHPExcel_Worksheet_Drawing_Shadow::SHADOW_BOTTOM_RIGHT;
            $this->color      = new PHPExcel_Style_Color(PHPExcel_Style_Color::COLOR_BLACK);
            $this->alpha      = 50;
        }

        /**
         * Get Visible
         * @return boolean
         */
        public function getVisible() {
            return $this->visible;
        }

        /**
         * Set Visible
         * @param boolean $pValue
         * @return PHPExcel_Worksheet_Drawing_Shadow
         */
        public function setVisible($pValue = false) {
            $this->visible = $pValue;
            return $this;
        }

        /**
         * Get Blur radius
         * @return int
         */
        public function getBlurRadius() {
            return $this->blurRadius;
        }

        /**
         * Set Blur radius
         * @param int $pValue
         * @return PHPExcel_Worksheet_Drawing_Shadow
         */
        public function setBlurRadius($pValue = 6) {
            $this->blurRadius = $pValue;
            return $this;
        }

        /**
         * Get Shadow distance
         * @return int
         */
        public function getDistance() {
            return $this->distance;
        }

        /**
         * Set Shadow distance
         * @param int $pValue
         * @return PHPExcel_Worksheet_Drawing_Shadow
         */
        public function setDistance($pValue = 2) {
            $this->distance = $pValue;
            return $this;
        }

        /**
         * Get Shadow direction (in degrees)
         * @return int
         */
        public function getDirection() {
            return $this->direction;
        }

        /**
         * Set Shadow direction (in degrees)
         * @param int $pValue
         * @return PHPExcel_Worksheet_Drawing_Shadow
         */
        public function setDirection($pValue = 0) {
            $this->direction = $pValue;
            return $this;
        }

        /**
         * Get Shadow alignment
         * @return int
         */
        public function getAlignment() {
            return $this->alignment;
        }

        /**
         * Set Shadow alignment
         * @param int $pValue
         * @return PHPExcel_Worksheet_Drawing_Shadow
         */
        public function setAlignment($pValue = 0) {
            $this->alignment = $pValue;
            return $this;
        }

        /**
         * Get Color
         * @return PHPExcel_Style_Color
         */
        public function getColor() {
            return $this->color;
        }

        /**
         * Set Color
         * @param     PHPExcel_Style_Color $pValue
         * @throws     PHPExcel_Exception
         * @return PHPExcel_Worksheet_Drawing_Shadow
         */
        public function setColor(PHPExcel_Style_Color $pValue = null) {
            $this->color = $pValue;
            return $this;
        }

        /**
         * Get Alpha
         * @return int
         */
        public function getAlpha() {
            return $this->alpha;
        }

        /**
         * Set Alpha
         * @param int $pValue
         * @return PHPExcel_Worksheet_Drawing_Shadow
         */
        public function setAlpha($pValue = 0) {
            $this->alpha = $pValue;
            return $this;
        }

        /**
         * Get hash code
         * @return string    Hash code
         */
        public function getHashCode() {
            return md5(($this->visible ? 't' : 'f') . $this->blurRadius . $this->distance . $this->direction . $this->alignment . $this->color->getHashCode() . $this->alpha . __CLASS__
            );
        }

        /**
         * Implement PHP __clone to create a deep clone, not just a shallow copy.
         */
        public function __clone() {
            $vars = get_object_vars($this);
            foreach ($vars as $key => $value) {
                if (is_object($value)) {
                    $this->$key = clone $value;
                } else {
                    $this->$key = $value;
                }
            }
        }
    }
